html {
    height: 100%;
}

.nav {
    margin-top: 5%;
    margin-left: 5%;
}

body {
    height: 50%;
    width: 100%;
    margin: 0;
}

.down {
    margin-top: 2%;
    margin-left: 10%;
}

.yuefen {
    width: 150%;
    text-align: center;
}

.tongjitu {
    height: 100%;
    margin-top: 5%;
}

.zongbaogao {
    margin-left: 5%;
    margin-top: 3%;
}

.fk_zong {
    height: 200px;
    width: 250px;
    background-color: rgb(240, 242, 248);
    border-radius: 10px;
    margin-top: 10%;
}

.fk_one {
    height: 50px;
    line-height: 50px;
    margin: 0 auto;
    text-align: center;
    font-size: 17px;
    width: 200px;
    border-bottom: 1px solid green;
}

.fk_two {
    height: 150px;
    line-height: 150px;
    margin: 0 auto;
    text-align: center;
    font-size: 80px;
}